"Adversarious" is a word in ENGLISH

In action; actually proceeding; working; in force; -- opposed to quiescent, dormant, or extinct; as, active laws; active hostilities; an …

One who is turned against another or others with a design to oppose or resist them; a member of an …

In hostile opposition to; unfavorable; unpropitious; contrary to one's wishes; unfortunate; calamitous; afflictive; hurtful; as, adverse fates, adverse circumstances, things …

To face in defiance; to confront; as, to affront death; hence, to meet in hostile encounter.

An encounter either friendly or hostile.

To commit the first act of hostility or offense; to begin a quarrel or controversy; to make an attack; -- …

The first attack, or act of hostility; the first act of injury, or first act leading to a war or …

The person who first attacks or makes an aggression; he who begins hostility or a quarrel; an assailant.

Friendly; mutually for-bearing; agreed or assented to by parties having conflicting Interests or a dispute; as opposed to hostile or …

Hostile to priests or the priesthood.

Tending to interrupt or destroy social intercourse; averse to society, or hostile to its existence; as, antisocial principles.

A cessation of arms for a short time, by convention; a temporary suspension of hostilities by agreement; a truce.

A suspending or cessation of hostilities between belligerent nations or forces for a considerable time

To attack with violence, or in a vehement and hostile manner; to assault; to molest; as, to assail a man …

To attack morally, or with a view to produce changes in the feelings, character, conduct, existing usages, institutions; to attack …

In a belligerent manner; hostilely.

To go on board of, or enter, as a ship, whether in a hostile or a friendly way.

The act of entering a ship, whether with a hostile or a friendly purpose.

A guerrilla; a marauding assassin; one who pretends to be a peaceful citizen, but secretly harasses a hostile force or …

A company of travelers, pilgrims, or merchants, organized and equipped for a long journey, or marching or traveling together, esp. …